Add GL_TRANSFORM_FEEDBACK_BUFFER_MODE to GetProgramiv query.

gpu/command_buffer/common/gles2_cmd_format.h

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 // This file defines the GLES2 command buffer commands.
 
 #ifndef GPU_COMMAND_BUFFER_COMMON_GLES2_CMD_FORMAT_H_
 #define GPU_COMMAND_BUFFER_COMMON_GLES2_CMD_FORMAT_H_
 
 
@@ skipping 163 matching lines @@
 // GetTransformFeedbackVaringCHROMIUM.
 struct TransformFeedbackVaryingInfo {
   uint32_t size;
   uint32_t type;
   uint32_t name_offset;  // offset from Header to start of name.
   uint32_t name_length;  // including the null terminator.
 };
 
 // The format of the bucket filled out by GetTransformFeedbackVaryingsCHROMIUM
 struct TransformFeedbackVaryingsHeader {
+  uint32_t transform_feedback_buffer_mode;
   uint32_t num_transform_feedback_varyings;
   // TransformFeedbackVaryingInfo varyings[num_transform_feedback_varyings];
 };
 
 // Parameters of a uniform that can be queried through glGetActiveUniformsiv,
 // but not through glGetActiveUniform.
 struct UniformES3Info {
   int32_t block_index;
   int32_t offset;
   int32_t array_stride;
@@ skipping 177 matching lines @@
     "offset of CreateAndConsumeTextureCHROMIUMImmediate.client_id should be 8");
 
 
 #pragma pack(pop)
 
 }  // namespace cmd
 }  // namespace gles2
 }  // namespace gpu
 
 #endif  // GPU_COMMAND_BUFFER_COMMON_GLES2_CMD_FORMAT_H_